Mystery DH aircraft Part – Hatfield – Tiger Moth?

Dear all –

hope you can help – we found two of the items in the photo inamongst some spares- they look like battery holders for a slimline battery- part nos are H-2935-4 on one piece and HC 2935-1 on the other – I think this means De Havilland Hatfield – can anyone ID them – they are surplus to our requirements so are for sale!

Thanks for your help as ever

TT